In music, What is the name that we give to the sign which tells us the name of the notes?

Acurious child asked his mother: “mommy, why are some of your hairs turning grey? ” the mother tried to use this occasion to teach her child: “it is because of you, dear. every bad action of yours will turn one of my hairs grey! ” the child replied innocently: “now i know why grandmother has only grey hairs on her head.”

What genre is dear evan hansen? cause google don't know

Example 1: example 2: examine the two example of reliefs above. what type of relief sculpture is each? justify your answers.